I just across this website and it has been really satisfying my sudoku hunger lol!

Its a little different from the classic, but your going to love it if you are a true fan of the game.
There's an app too, which is great for when your out and about.
http://www.2sudoku.com/
Enjoy it my fellow Sudoku-ers, let me know what you think of it because I think it's pretty awesome

Jan